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Find the World's Best Unix Freelancers

Upwork is the leading online workplace, home to thousands of top-rated freelancers. It’s simple to post your job and get personalized bids, or browse Upwork for amazing talent ready to work on your Unix project today.

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Kyrylo P. - C/C++ Software Engineer & Architect

Kyrylo P.

C/C++ Software Engineer & Architect

$36/hr
621 hours
Ukraine
100% JOB SUCCESS
“I liked working with Kyrylo very much. His technical ability, his patience and his professionalism made this project to be delivered successfully. I'm very pleased with his work.”
  • Video Streaming
  • C
  • C++
  • Unix
  • Qt
Josep E. - Ruby on Rails and Full Stack Web Developer

Josep E.

Ruby on Rails and Full Stack Web Developer

$75/hr
61 hours
Spain
New to Upwork
  • Ruby
  • Ruby on Rails
  • jQuery
Timofey P. - Full stack .Net developer

Timofey P.

Full stack .Net developer

$22.22/hr
61 hours
Russia
100% JOB SUCCESS
“Tim was great to work with again. He fixed our SQL report builder issues quickly. His experience shows through his work. He isn't guessing and trying different things to see if...”
  • .NET Framework
  • C#
  • VB.NET
  • SQL
Aleksandra T. - Experienced QA Engineer/Software Tester

Aleksandra T.

Experienced QA Engineer/Software Tester

$11.11/hr
1,178 hours
Ukraine
100% JOB SUCCESS
“Thanks alot, great hard worker”
  • Software QA Testing
  • SQL
Erik H. - iOS Developer (Objective-C, Swift, Cocoa)

Erik H.

iOS Developer (Objective-C, Swift, Cocoa)

$55/hr
1,110 hours
Sweden
100% JOB SUCCESS
“Erik was incredibly helpful and knowledgeable. He was easy to talk to and took the time to make sure each point was understood, by a laymen like me. I hope to work with him again.”
  • Objective-C
  • Swift
  • Cocoa
Kashif T. - Senior iOS/ Android Developer

Kashif T.

Senior iOS/ Android Developer

$35/hr
142 hours
Pakistan
100% JOB SUCCESS
“Kashif has been excellent in almost every area you would expect. Great command of English, always available, and most importantly, the highest quality of work. It was a great pleasure...”
  • iOS Development
  • Unity
Andrey L. - Expert PHP Developer

Andrey L.

Expert PHP Developer

$20/hr
971 hours
Ukraine
100% JOB SUCCESS
  • MySQL Programming
  • HTML5
  • Git
Gaston C. - Unity3D Game Developer

Gaston C.

Unity3D Game Developer

$44.44/hr
83 hours
Argentina
100% JOB SUCCESS
“Gaston is the best developer I have worked with. He is really profesional. In my experience, when you develop an app, the feedback list is always long. He managed to solve all...”
  • Unity
  • C#
  • ASP.NET MVC
  • Java
Artem B. - Senior Android/iOS Developer

Artem B.

Senior Android/iOS Developer

$45/hr
1,132 hours
Belarus
100% JOB SUCCESS
“We have Artem to be an excellent Android developer. After our previous experience (not via Upwork) it was a refreshing change to have someone who quickly understood our requirements,...”
  • Android App Development
Reginald B. - Project Manager, QA Tester

Reginald B.

Project Manager, QA Tester

$11.11/hr
7,662 hours
Philippines
100% JOB SUCCESS
“Reg did a great job! Reccomended!”
  • Project management
  • Joomla!
Andronic T. - Expert Photo&Video Editor, Designer, Photographer

Andronic T.

Expert Photo&Video Editor, Designer, Photographer

$11/hr
144 hours
Romania
100% JOB SUCCESS
  • Adobe Photoshop
  • Web design

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What our customers are saying


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A Guide to Server Technology

In this Guide to Server Technology, we’ll delve into the server component of the stack–the computer that powers the whole operation. Scale up your server IQ with a look at how servers work, common types of dedicated servers, who to hire to help you maintain your server operations, and a few things to consider when choosing, setting up, or migrating your server architecture.

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Java is a server-side programming language that’s widely known, popular for enterprise-level applications, and ideal for high-traffic sites that need room to grow. It’s also the primary language of Google’s Android mobile applications, which brought it back onto developers’ radars in a big way.

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Back-End Technology: The Role of the Back-End Web Developer

Your website or dynamic web application is a sum of layers—structure, design and content, and functionality. The technology and programming that “power” a site—what your end user doesn’t see but what makes the site run—is called the back end. Consisting of the server, the database, and the server-side applications, it’s the behind-the-scenes functionality—the brain of a site. This is the ecosystem of the database manager and the back-end developer.

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